.jx-flex{
  display: flex;
}
.jx-center{
  justify-content: center;
  align-items: center;
}
.jx-jus-center{
  justify-content: center;
}
.jx-align-center{
  align-items: center;
}
.jx-jus-end{
  justify-content: flex-end;
}
.jx-margin{
  margin: 20px;
}
.jx-mar-top{
  margin-top: 20px;
}
.jx-mar-bottom{
  margin-bottom: 20px;
}
.jx-mar-left{
  margin-left: 20px;
}
.jx-mar-right{
  margin-right: 20px;
}